Personally I wouldn't install a cone style filter.� Part of the
reason for the air box is provide cleaner COOLER air from elsewhere.�
The engine compartment is dirty and wet and a cone filter will not protect
you from a good water splash and it will get dirtier faster with all the
road crap being kicked up.� Also, the cooler the air is there more
air there is at a given volume.� As we are running a AFM and not a
MAF there is no way for the system to tell how dense the air is - so yeah
the CARB guys and other people who do that kind of checking won't be happy
- even though technically the O2 sensor should look after this by leanin
gout the mixture which means you will loose power with warm air too.�
They also act as a muffler - step on it and your 2.1 will growl loudly -
yeah teenager cool sound, but really... 

Just one of many
reasons why I don't run cone filters that are out side of an air box.

David Marshall
VW Adventure Driver and BMW Adventure Rider
 
http://www.hasenwerk.ca

On Mon, January 19, 2009
12:13, David Kao wrote:
> 
> Will that mod causes
attention to smog technicians when you
> bring your Vanagon in for
a smog check? Every time I did a
> smog check they seemed to do
all they could to see if anything
> is modified from the original.
I am talking about California.
> I think it may be OK else
where.
> 
> I have wanted to get rid of that air box too.
I can no longer
> find air filters locally for Vanagons. Perhaps a
better solution
> is to get air filter available then modify the
filter to fit.
> It should be fairly easy to do than modifying to
use a different
> air filter box.
> 
> David
>